PoserFreaks Calendarcatch-up after Xmas until end of year
Fantasy Attic Merry Little Christmas until end of year
 Active Rendering Advent Calendar
 RenderAtelier  Advent Calendar
 Art of Poser  Advent Calendar
 Living Dreams - A Dreamy Christmas not exactly an calendar
 C4D Advent Calendar Forum
 Renderosity Holiday Giveaway - Week 1 - Week 2 - Week 3
 HolliDAZ Freebies
 RDNA 13 Days of Cranky Christmas - Day 1 - Day 2 - Day 3 - Day 4 - Day 5 - Day 6 - Day 7 - Day 8 - Day 9 - Day 10 - Day 11 - Day 12 - Day 13

Single Xmas Goodies

RedEyeCat's Season Greetings 2014
Frosty Snowman
Christmas Bells, also available here on dA
Christmas Baubles
Merry Christmas Word Prop
Roasted Turkey, also available here on dA
Gingerbread Man
Chocolate Santa and Candy Cane
Seasons Dress V4 limited time only, until Jan 01, 2015
Art Mystique Xmas Freebies 2014
Gecko by Mada
Santa Hat, also available here on dA

Software Goodies Advent Calendars

  PC Welt Xmas Special 2013 usually german language software
  CHIP Online Calendar usually german language software
  Heise Advent Calendar usually german language software

Mixed Goodies Advent Calendars

Fantasy Zauberland Calendar

Last Year's List